QuestionAdd or subtract these measurements, ensuring the correct significant digits:
8.70 mL - 7.8 mL = \square mL
17.570 mL + 18.8 mL = \square mL
11.9 mL + 13.577 mL = \square mL
Studdy Solution
STEP 1
Assumptions1. We are dealing with addition and subtraction of measurements.
. The measurements are given in milliliters (m).
3. We need to ensure that our answers contain the correct number of significant digits. This is determined by the measurement with the least number of decimal places in each problem.
STEP 2
Let's start with the first problem
STEP 3
Subtract the two measurements.
STEP 4
However, we need to ensure that our answer has the correct number of significant digits. The measurement with the least number of decimal places in this problem is , which has one decimal place. Therefore, our answer should also have one decimal place. So, the answer is correct as it is.
STEP 5
Now, let's move on to the second problem
STEP 6
Add the two measurements.
STEP 7
Again, we need to ensure that our answer has the correct number of significant digits. The measurement with the least number of decimal places in this problem is , which has one decimal place. Therefore, our answer should also have one decimal place. So, we round to one decimal place to get .
STEP 8
Finally, let's solve the third problem
STEP 9
Add the two measurements.
STEP 10
Once more, we need to ensure that our answer has the correct number of significant digits. The measurement with the least number of decimal places in this problem is , which has one decimal place. Therefore, our answer should also have one decimal place. So, we round to one decimal place to get .
So, the solutions to the problems are
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